summaryrefslogtreecommitdiff
path: root/drivers/scsi
AgeCommit message (Collapse)Author
2020-07-08scsi: aha152x: Remove unused variable 'ret'Lee Jones
Looks to be unused since 2014. Fixes the following W=1 kernel build warning(s): drivers/scsi/aha152x.c: In function ‘datai_run’: drivers/scsi/aha152x.c:2033:9: warning: variable ‘data’ set but not used [-Wunused-but-set-variable] 2033 | int data; | ^~~~ Link: https://lore.kernel.org/r/20200707140055.2956235-7-lee.jones@linaro.org Cc: "Juergen E. Fischer" <fischer@norbit.de> Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: fdomain: Mark 'fdomain_pm_ops' as __maybe_unusedLee Jones
Not all source files which include 'fdomain.h' make use of 'fdomain_pm_ops' leaving them defined but unused. Mark it as __maybe_unused to tell the compiler this is not only acceptable, but expected. Fixes the following W=1 kernel build warning(s): In file included from drivers/scsi/pcmcia/fdomain_cs.c:16: drivers/scsi/fdomain.h:106:32: warning: ‘fdomain_pm_ops’ defined but not used [-Wunused-const-variable=] 106 | static const struct dev_pm_ops fdomain_pm_ops; | ^~~~~~~~~~~~~~ Link: https://lore.kernel.org/r/20200707140055.2956235-4-lee.jones@linaro.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: ufs: Change upiu_flags to be u8Bean Huo
According to the UFS Spec, the Flags field in the UPIU is one byte in size, not 4. Change it to be u8. Link: https://lore.kernel.org/r/20200706123936.24799-1-huobean@gmail.com Tested-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Bean Huo <beanhuo@micron.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: mpt3sas: Fix kdoc comments formatDamien Le Moal
Fix kdoc comments format to avoid compiler warnings when compiling with W=1. No functional changes. Link: https://lore.kernel.org/r/20200706123358.452180-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: mpt3sas: Fix set but unused variableDamien Le Moal
In _config_request(), the variable issue_reset is set using the macro mpt3sas_check_cmd_timeout() but otherwise unused, causing a compiler warning when compiling with W=1. Avoid this warning by removing this variable, using the function mpt3sas_base_check_cmd_timeout() directly instead of the mpt3sas_check_cmd_timeout() macro. Link: https://lore.kernel.org/r/20200706123356.452135-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: sd_zbc: Fix kdoc comment formatDamien Le Moal
Fix the kdoc comment of the function sd_zbc_check_capacity() to avoid a compiler warning when compiling with W=1. No functional changes. Link: https://lore.kernel.org/r/20200706123355.452091-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: sd: Fix kdoc comment formatDamien Le Moal
Fix the kdoc comment of the function sd_ioctl_common() to avoid a compiler warning when compiling with W=1. No functional changes. Link: https://lore.kernel.org/r/20200706123354.452047-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Remove set but unused variableDamien Le Moal
In mega_is_bios_enabled(), the variable ret is set but unused. Remove it to avoid a compiler warning. Link: https://lore.kernel.org/r/20200706123352.452003-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Fix set but unused variableDamien Le Moal
In megadev_ioctl(), if MEGA_HAVE_STATS is not defined, the variables num_ldrv and ustats are unused. Conditionally define them to avoid compiler warnings. Link: https://lore.kernel.org/r/20200706123351.451959-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Remove set but unused variableDamien Le Moal
In mega_build_cmd(), the variable epthru is set but not used. Remove it to avoid a compiler warning. Link: https://lore.kernel.org/r/20200706123349.451915-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Remove set but unused variableDamien Le Moal
The variable remainder is unused in mega_div64_32(). Remove it to avoid a compiler warning. While at it, also fix the function documentation comments. Link: https://lore.kernel.org/r/20200706123348.451871-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Fix compilation warningsDamien Le Moal
Move function declarations to megaraid_sas.h to avoid warnings such as: warning: no previous prototype for ‘xxx' No functional changes. Link: https://lore.kernel.org/r/20200706123346.451827-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: megaraid: Fix kdoc comments formatDamien Le Moal
Fix kernel documentation comments to avoid various warnings when compiling with W=1. No functional changes. Link: https://lore.kernel.org/r/20200706123345.451783-1-damien.lemoal@wdc.com Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: docs: Remove invalid link and update text for zfcp kernel configBenjamin Block
IBM decided to retire a lot of the content that was previously hosted on "developerworks", and so some of the links we've used for documentation are now dead or redirect to some general landing page with no correlation to what the links were meant to provide. Change the provided link in the Kconfig file for zfcp to rather refer to our device drivers book that we regularly update and publish for free, and whose name hasn't been changed since it was first published. Our hardware is also not called "IBM eServer zSeries" anymore - in fact, it hasn't been called like that since 2006. Use a broader term that covers different server names over time. Lastly, add a short paragraph about how our HBAs are typically named, to have some more tangible references. Link: https://lore.kernel.org/r/96069b9f4c4f056a515b37e89b2bdfccc282e3d3.1593780621.git.bblock@linux.ibm.com Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-08scsi: iscsi: Register sysfs for workqueue iscsi_destroyBob Liu
Register sysfs for workqueue iscsi_destroy so that users can set CPU affinity through "cpumask" for this workqueue to get better isolation in cloud multi-tenant scenario. This patch unfolded create_singlethread_workqueue(), added WQ_SYSFS and drop __WQ_ORDERED_EXPLICIT since __WQ_ORDERED_EXPLICIT workqueue isn't allowed to change "cpumask". Link: https://lore.kernel.org/r/20200703051603.1473-1-bob.liu@oracle.com Suggested-by: Mike Christie <michael.christie@oracle.com> Reviewed-by: Lee Duncan <lduncan@suse.com> Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Bob Liu <bob.liu@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-07scsi: mpt3sas: Fix error returns in BRM_status_showJohannes Thumshirn
BRM_status_show() has several error branches, but none of them record the error in the error return. Also while at it remove the manual mutex_unlock() of the pci_access_mutex in case of an ongoing pci error recovery or host removal and jump to the cleanup label instead. Note: We can safely jump to out from here as io_unit_pg3 is initialized to NULL and if it hasn't been allocated, kfree() skips the NULL pointer. [mkp: compilation warning] Link: https://lore.kernel.org/r/20200701131454.5255-1-johannes.thumshirn@wdc.com Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Acked-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-07PCI: Use 'pci_channel_state_t' instead of 'enum pci_channel_state'Luc Van Oostenryck
The method struct pci_error_handlers.error_detected() is defined and documented as taking an 'enum pci_channel_state' for the second argument, but most drivers use 'pci_channel_state_t' instead. This 'pci_channel_state_t' is not a typedef for the enum but a typedef for a bitwise type in order to have better/stricter typechecking. Consolidate everything by using 'pci_channel_state_t' in the method's definition, in the related helpers and in the drivers. Enforce use of 'pci_channel_state_t' by replacing 'enum pci_channel_state' with an anonymous 'enum'. Note: Currently, from a typechecking point of view this patch changes nothing because only the constants defined by the enum are bitwise, not the enum itself (sparse doesn't have the notion of 'bitwise enum'). This may change in some not too far future, hence the patch. [bhelgaas: squash in https://lore.kernel.org/r/20200702162651.49526-3-luc.vanoostenryck@gmail.com https://lore.kernel.org/r/20200702162651.49526-4-luc.vanoostenryck@gmail.com] Link: https://lore.kernel.org/r/20200702162651.49526-2-luc.vanoostenryck@gmail.com Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-07-02scsi: eesox: Fix different dev_id between request_irq() and free_irq()Christophe JAILLET
The dev_id used in request_irq() and free_irq() should match. Use 'info' in both cases. Link: https://lore.kernel.org/r/20200626040553.944352-1-christophe.jaillet@wanadoo.fr Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: powertec: Fix different dev_id between request_irq() and free_irq()Christophe JAILLET
The dev_id used in request_irq() and free_irq() should match. Use 'info' in both cases. Link: https://lore.kernel.org/r/20200626035948.944148-1-christophe.jaillet@wanadoo.fr Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: scsi_debug: Fix in_use bitmap corruptionDouglas Gilbert
Heavy testing indicates the irqsave() spinlock around the __set_bit() is insufficient to stop following clear_bit() calls being rarely applied out-of-order. Also the nearby failed kzalloc() path leading to SCSI_MLQUEUE_HOST_BUSY does not properly undo the in_use bitmap and num_in_q, fix. Link: https://lore.kernel.org/r/20200702145355.522283-1-dgilbert@interlog.com Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: iscsi: Remove sessdestroylistMike Christie
Just delete the sess from the session list instead of adding it to some list we never use. Link: https://lore.kernel.org/r/1593632868-6808-4-git-send-email-michael.christie@oracle.com Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: iscsi: Optimize work queue flush useMike Christie
There is no need for one session to flush the entire iscsi_eh_timer_workq when removing/unblocking a session. During removal we need to make sure our works are not running anymore. And iscsi_unblock_session only needs to make sure its work is done. The unblock work function will flush/cancel the works it has conflicts with. Link: https://lore.kernel.org/r/1593632868-6808-3-git-send-email-michael.christie@oracle.com Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: iscsi: Delay freeing target_idMike Christie
If we are doing async removal of the session, we could be doing a scsi_remove_target from the removal workqueue, and for the offload case we could be doing a new session addition and scan to the same host. The add/scan might then end up trying to use the target_id of the target we are removing. This patch just has a delay the freeing of the target_id until after the scsi_remove_target has completed, so we know it's no longer in use. Link: https://lore.kernel.org/r/1593632868-6808-2-git-send-email-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: mpt3sas: Fix unlock imbalanceDamien Le Moal
In BRM_status_show(), if the condition "!ioc->is_warpdrive" tested on entry to the function is true, a "goto out" is called. This results in unlocking ioc->pci_access_mutex without this mutex lock being taken. This generates the following splat: [ 1148.539883] mpt3sas_cm2: BRM_status_show: BRM attribute is only for warpdrive [ 1148.547184] [ 1148.548708] ===================================== [ 1148.553501] WARNING: bad unlock balance detected! [ 1148.558277] 5.8.0-rc3+ #827 Not tainted [ 1148.562183] ------------------------------------- [ 1148.566959] cat/5008 is trying to release lock (&ioc->pci_access_mutex) at: [ 1148.574035] [<ffffffffc070b7a3>] BRM_status_show+0xd3/0x100 [mpt3sas] [ 1148.580574] but there are no more locks to release! [ 1148.585524] [ 1148.585524] other info that might help us debug this: [ 1148.599624] 3 locks held by cat/5008: [ 1148.607085] #0: ffff92aea3e392c0 (&p->lock){+.+.}-{3:3}, at: seq_read+0x34/0x480 [ 1148.618509] #1: ffff922ef14c4888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x2a/0xb0 [ 1148.630729] #2: ffff92aedb5d7310 (kn->active#224){.+.+}-{0:0}, at: kernfs_seq_start+0x32/0xb0 [ 1148.643347] [ 1148.643347] stack backtrace: [ 1148.655259] CPU: 73 PID: 5008 Comm: cat Not tainted 5.8.0-rc3+ #827 [ 1148.665309] Hardware name: HGST H4060-S/S2600STB, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 [ 1148.678394] Call Trace: [ 1148.684750] dump_stack+0x78/0xa0 [ 1148.691802] lock_release.cold+0x45/0x4a [ 1148.699451] __mutex_unlock_slowpath+0x35/0x270 [ 1148.707675] BRM_status_show+0xd3/0x100 [mpt3sas] [ 1148.716092] dev_attr_show+0x19/0x40 [ 1148.723664] sysfs_kf_seq_show+0x87/0x100 [ 1148.731193] seq_read+0xbc/0x480 [ 1148.737882] vfs_read+0xa0/0x160 [ 1148.744514] ksys_read+0x58/0xd0 [ 1148.751129] do_syscall_64+0x4c/0xa0 [ 1148.757941] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1148.766240] RIP: 0033:0x7f1230566542 [ 1148.772957] Code: Bad RIP value. [ 1148.779206] RSP: 002b:00007ffeac1bcac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 1148.790063] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f1230566542 [ 1148.800284] RDX: 0000000000020000 RSI: 00007f1223460000 RDI: 0000000000000003 [ 1148.810474] RBP: 00007f1223460000 R08: 00007f122345f010 R09: 0000000000000000 [ 1148.820641] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000000000 [ 1148.830728] R13: 0000000000000003 R14: 0000000000020000 R15: 0000000000020000 Fix this by returning immediately instead of jumping to the out label. Link: https://lore.kernel.org/r/20200701085254.51740-1-damien.lemoal@wdc.com Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Acked-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: core: Register sysfs for SCSI workqueueBob Liu
Permit scsi_wq_xxx and scsi_tmf_xxx to be bound to different CPUs to get better isolation. Use alloc_workqueue with WQ_SYSFS and drop __WQ_ORDERED_EXPLICIT since a __WQ_ORDERED_EXPLICIT workqueue isn't allowed to change the CPU mask. Link: https://lore.kernel.org/r/20200701030745.16897-2-bob.liu@oracle.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Bob Liu <bob.liu@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: iscsi: Change iSCSI workqueue max_active back to 1Bob Liu
Commit 3ce419662dd4 ("scsi: iscsi: Register sysfs for iscsi workqueue") enabled 'cpumask' support for iSCSI workqueues. However, it is unnecessary to set max_active = 2 since 'cpumask' can still be modified when max_active is 1. This patch sets max_active to 1 so as to keep the same behaviour as before. Link: https://lore.kernel.org/r/20200701030745.16897-1-bob.liu@oracle.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Bob Liu <bob.liu@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Update lpfc version to 12.8.0.2Dick Kennedy
Update lpfc version to 12.8.0.2 Link: https://lore.kernel.org/r/20200630215001.70793-15-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Add an internal trace log bufferDick Kennedy
The current logging methods typically end up requesting a reproduction with a different logging level set to figure out what happened. This was mainly by design to not clutter the kernel log messages with things that were typically not interesting and the messages themselves could cause other issues. When looking to make a better system, it was seen that in many cases when more data was wanted was when another message, usually at KERN_ERR level, was logged. And in most cases, what the additional logging that was then enabled was typically. Most of these areas fell into the discovery machine. Based on this summary, the following design has been put in place: The driver will maintain an internal log (256 elements of 256 bytes). The "additional logging" messages that are usually enabled in a reproduction will be changed to now log all the time to the internal log. A new logging level is defined - LOG_TRACE_EVENT. When this level is set (it is not by default) and a message marked as KERN_ERR is logged, all the messages in the internal log will be dumped to the kernel log before the KERN_ERR message is logged. There is a timestamp on each message added to the internal log. However, this timestamp is not converted to wall time when logged. The value of the timestamp is solely to give a crude time reference for the messages. Link: https://lore.kernel.org/r/20200630215001.70793-14-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Add blk_io_poll support for latency improvmentDick Kennedy
Although the existing implementation is very good at high I/O load, on tests involving light load, especially on only a few hardware queues, latency was a little higher than it can be due to using workqueue scheduling. Other tasks in the system can delay handling. Change the lower level to use irq_poll by default which uses a softirq for I/O completion. This gives better latency as variance in when the cq is processed is reduced over the workqueue interface. However, as high load is better served by not being in softirq when the CPU is loaded, work queues are still used under high I/O load. Link: https://lore.kernel.org/r/20200630215001.70793-13-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Add support to display if adapter dumps are availableDick Kennedy
Currently, if there has been an issue whereby an adapter dump was taken, there is nothing displayed to hint that it is present. Utilities must be run and they must query for the status in order to then download the dump. Add a message to the driver to query dump image presence when initializing the SLI Port. Link: https://lore.kernel.org/r/20200630215001.70793-12-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Allow applications to issue Common Set Features mailbox commandDick Kennedy
Currently the driver validates command codes received from the application. COMMON_SET_FEATURES is not currently being approved. Add definition of the missing command and allow it to be issued by applications. Link: https://lore.kernel.org/r/20200630215001.70793-11-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix language in 0373 message to reflect non-error messageDick Kennedy
Change vocabulary of 0373 log msg from "error" to "cmpl" The current language of the 0373 message contains the word "error" which caused a number of customers to inquire about the "error" and if it should be a concern. It isn't an error, it's simply an io completion status. Revise the message to replace the word "error" with "cmpl" for completion. Link: https://lore.kernel.org/r/20200630215001.70793-10-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix kdump hang on PPCDick Kennedy
When the kdump kernel shuts down lpfc calls flush_work_queue on an interrupt to schedule the cq handler. When there is only one CPU active on the kdump kernel, it is possible for the work_on to get scheduled on a non-active CPU causing it to never be scheduled. When in the kdump environment, per-CPU affinity of cq's to cpus is not necessary. In those cases, use a general queue_work rather than a queue_work_on(). Link: https://lore.kernel.org/r/20200630215001.70793-9-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix shost refcount mismatch when deleting vportDick Kennedy
When vports are deleted, it is observed that there is memory/kthread leakage as the vport isn't fully being released. There is a shost reference taken in scsi_add_host_dma that is not released during scsi_remove_host. It was noticed that other drivers resolve this by doing a scsi_host_put after calling scsi_remove_host. The vport_delete routine is taking two references one that corresponds to an access to the scsi_host in the vport_delete routine and another that is released after the adapter mailbox command completes that destroys the VPI that corresponds to the vport. Remove one of the references taken such that the second reference that is put will complete the missing scsi_add_host_dma reference and the shost will be terminated. Link: https://lore.kernel.org/r/20200630215001.70793-8-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix stack trace seen while setting rrq activeDick Kennedy
Call traces have been observed running different tests that involve aborts and setting the rrq active flag. The lpfc_set_rrq_active routine is doing a mempool_alloc under the soft_irq processing level. When the mempool needs to get a new buffer from the free pool and has to wait for memory to become free it will check the flags passed in on the alloc and dump the stack if the thread is running in interrupt context. Replace the GFP_KERNEL flag with GFP_ATOMIC so that the memory allocation will not attempt to sleep if there is no mem available. Link: https://lore.kernel.org/r/20200630215001.70793-7-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix oops due to overrun when reading SLI3 dataDick Kennedy
When using DUMP on SLI3 to read VPD and Port status data (config region 23), the adapter is overruning the kmalloc'd buffer causing havoc on other consumers of the allocation pools. Rework the loops processing the dump data and validate/size memory lengths before performing bcopy. Link: https://lore.kernel.org/r/20200630215001.70793-6-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix NVMe rport deregister and registration during ADISCDick Kennedy
During driver unload/reload testing, the NVMe initiator would not re-establish connectivity to NVMe controllers on reload. The failing NVMe array supports concurrent FCP and NVMe operation via different nport_id's. The array was repeatedly sending an ADISC every 2 seconds after PLOGI completed and while NVMe subsystems were executing discovery. The target would continue this state for roughly 45 seconds. The driver's current behavior on ADISC receipt is to validate a the ADISC vs the device and issue a RESUME_RPI to restore transmission. The receipt of the ADISC effectively caused a driver to take actions similar to a logout and login for the remote port, causing the deregistration of the nvme rport and a subsequent re-registration. This caused a constant reset and re-connect of the NVMe controller while this 45s window occurred. There was no need for the state changes as ADISC does not change login state. This patch corrects this behavior by validating if the remoteport is already logged in (MAPPED) and when true, avoids the call to set the ndlp state to MAPPED, which triggers the unreg/re-reg. Thus ADISC does not change the login state of the node. Link: https://lore.kernel.org/r/20200630215001.70793-5-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix missing MDS functionalityDick Kennedy
Visual code inspection of the MDS implementation revealed two errors in the driver: - The set features Feature Code had an incorrect value - The routine that classifies command type for cmd completions was missing the Send Frame definition. Send Frame is used for MDS driver loopback. Link: https://lore.kernel.org/r/20200630215001.70793-3-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-02scsi: lpfc: Fix unused assignment in lpfc_sli4_bsg_link_diag_testDick Kennedy
Coverity reported the following error: Assigned value that is never used may represent unnecessary computation. The rc variable was initially assigned a value but in several cases, when an error case is detected, it is reassigned a new value. The initial value had little use. In code-reviewing this routine, it could use some cleanup: - Setting the initialization value to -ENODEV is a much better choice and lessens code in the routine. - The wasn't tracking logic errors vs no error and mailbox failure. Better to resolve by adding a status to track the mailbox failure and merge it with the logic error when the routine returns. Link: https://lore.kernel.org/r/20200630215001.70793-2-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01scsi: qla2xxx: SAN congestion management implementationShyam Sundar
* Firmware Initialization with SCM enabled based on NVRAM setting and firmware support (About Firmware). * Enable PUREX and add support for fabric performance impact notification (FPIN) handling. * Allocate a default PUREX item for each vha to handle memory allocation failures in ISR. Link: https://lore.kernel.org/r/20200630102229.29660-3-njavali@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Reviewed-by: James Smart <james.smart@broadcom.com> Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Arun Easi <aeasi@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-01scsi: qla2xxx: Change in PUREX to handle FPIN ELS requestsShyam Sundar
SAN Congestion Management generates ELS pkts whose size can vary and be > 64 bytes. Change the PUREX handling code to support non-standard ELS pkt size. Link: https://lore.kernel.org/r/20200630102229.29660-2-njavali@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Arun Easi <aeasi@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Introduce a function for computing the debug message prefixBart Van Assche
Instead of repeating the code for generating a debug message prefix six times, introduce a function for computing the debug message prefix. Link: https://lore.kernel.org/r/20200629225454.22863-10-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Make qla2x00_restart_isp() easier to readBart Van Assche
Instead of using complicated control flow to only have one return statement at the end of qla2x00_restart_isp(), return an error status as soon as it is known that this function will fail. Link: https://lore.kernel.org/r/20200629225454.22863-9-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Fix a Coverity complaint in qla2100_fw_dump()Bart Van Assche
'cnt' can exceed the size of the risc_ram[] array. Prevent that Coverity complains by rewriting an address calculation expression. This patch fixes the following Coverity complaint: CID 337803 (#1 of 1): Out-of-bounds read (OVERRUN) 109. overrun-local: Overrunning array of 122880 bytes at byte offset 122880 by dereferencing pointer &fw->risc_ram[cnt]. Link: https://lore.kernel.org/r/20200629225454.22863-8-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Make __qla2x00_alloc_iocbs() initialize 32 bits of ↵Bart Van Assche
request_t.handle The request_t 'handle' member is 32-bits wide, hence use wrt_reg_dword(). Change the cast in the wrt_reg_byte() call to make it clear that a regular pointer is casted to an __iomem pointer. Note: 'pkt' points to I/O memory for the qlafx00 adapter family and to coherent memory for all other adapter families. This patch fixes the following Coverity complaint: CID 358864 (#1 of 1): Reliance on integer endianness (INCOMPATIBLE_CAST) incompatible_cast: Pointer &pkt->handle points to an object whose effective type is unsigned int (32 bits, unsigned) but is dereferenced as a narrower unsigned short (16 bits, unsigned). This may lead to unexpected results depending on machine endianness. Link: https://lore.kernel.org/r/20200629225454.22863-7-bvanassche@acm.org Fixes: 8ae6d9c7eb10 ("[SCSI] qla2xxx: Enhancements to support ISPFx00.") Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Remove a superfluous castBart Van Assche
Remove an unnecessary cast because it prevents the compiler to perform type checking. Link: https://lore.kernel.org/r/20200629225454.22863-6-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Shyam Sundar <ssundar@marvell.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Initialize 'n' before using itBart Van Assche
The following code: qla82xx_rom_fast_read(ha, 0, &n) only initializes 'n' if it succeeds. Since 'n' may be reported in a debug message even if no ROM reads succeeded, initialize 'n' to zero. This patch fixes the following sparse warning: qla_nx.c:1218: qla82xx_pinit_from_rom() error: uninitialized symbol 'n'. Link: https://lore.kernel.org/r/20200629225454.22863-5-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Shyam Sundar <ssundar@marvell.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Make qla82xx_flash_wait_write_finish() easier to readBart Van Assche
Return early instead of having a single return statement at the end of this function. This patch fixes the following sparse warning: qla_nx.c:1018: qla82xx_flash_wait_write_finish() error: uninitialized symbol 'val'. Link: https://lore.kernel.org/r/20200629225454.22863-4-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Remove the __packed annotation from struct fcp_hdr and fcp_hdr_leBart Van Assche
Remove the __packed annotation from struct fcp_hdr* because that annotation is not necessary for these data structures. Link: https://lore.kernel.org/r/20200629225454.22863-3-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-30scsi: qla2xxx: Check the size of struct fcp_hdr at compile timeBart Van Assche
Since struct fcp_hdr is used to exchange data with the firmware, check its size at compile time. Link: https://lore.kernel.org/r/20200629225454.22863-2-bvanassche@acm.org Cc: Nilesh Javali <njavali@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Himanshu Madhani <himanshu.madhani@oracle.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Reviewed-by: Daniel Wagner <dwagner@suse.de> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit (git 2.34.1) at 2025-09-11 18:35:16 +0000